1978 Ericson 27 fiberglass repair, which resin?? - SailNet Community

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Old 06-19-2009
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twilkins is on a distinguished road
Cool 1978 Ericson 27 fiberglass repair, which resin??

I recently purchased my first sail boat. It is a 1978 Ericson 27 with a volvo engine, there is a hole in the hull where a transducer was which is now gone, i want to simple fiberglass over the hole, I was going to do that tommorrow but someone told me to make sure i use the right resin, i dont know a whole lot about glass work. The local marine store has vinyl ester? and poly ester? resin. Which one would I use? Does anyone know or know where i can find out? I was really hoping to get this done theis weekend so I can launch next week! Thanks in advance!
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Old 06-20-2009
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West System

I would recommend West System. It is easy to use.

If you call their help line they will tell you exactly what to buy and how to apply it. I have and E-27 1974 and am currently working on the rudder. I called them and they led me in the right direction..
Good luck
Mike
Maine
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Old 06-21-2009
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magnacrete is on a distinguished road
epoxy

I had a similar case and i put in a thru hull with a cap. If i need to use it again it's there. If you must glass use epoxy resin for better bond.
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Old 08-04-2010
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ericson 27 rudder post

I jammed my 78 Ericson rudder so bad it froze and now I cannot get it to drop. I know there is no quadrant but wedging and all does not seem to budge it........is there something I am missing??
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Old 08-04-2010
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Lightbulb

Epoxy resin has superior adhesive qualities over poly, so I always use it for fabrication and repairs on our boats.
Note that when filling a hole you always need to chamfer that edge back at a 12 to 1 ratio, per the instructions in the excellent manuals you can d/l from West.
Epoxy by the Leading Epoxy Manufacturer | WEST SYSTEM Epoxy
and
Fiberglass Boat Repair and Restoration

If you are working on an Ericson, just post up your questions to hundreds of other E-27 owners over at the main site, EricsonYachts.org: The Starting Point on Ericson Yachts!.

Last edited by olson34; 07-25-2012 at 03:33 PM.
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Old 06-21-2012
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Re: 1978 Ericson 27 fiberglass repair, which resin??

I hope I don't add to the confusion.

West Systems is a fantastic product when used correctly, so make sure you use it correctly.

First bevel the edges of the hole from the outside as much as possible to increase the surface area of the hole. I like to use a rasp (a wood bastard file). Clean the interior surrounding fiberglass, sand it to remove any paint and rough up and expose clean fiberglass.

Paint the inside with unthickened epoxy, and when it begins to kick, lay on a bandage of biaxial cloth that overlaps the hole, and paint the fiberglass cloth with enough epoxy to saturate it.

Wait for the epoxy on the inside patch to begin to cure, still tacky to your finger, and lay on a biaxial round patch the size of the hole on the outside and paint with epoxy. Cut circular patches each ¼” or so larger than the last to build up layers of fiberglass that overlap onto the beveled outside edge you created earlier. Add layers to bring the thickness close to that of your hull—however thick that is—and finish, again when the epoxy is still tacky, by thickening some epoxy and fairing the patch.

When it is completely cured, wash the area with clear water and a 3-M scrubee to remove the anime blush from the epoxy. Sand the exterior with 80 grit sandpaper to knock off the high spots and make the low spots, if any more visible. Use more thickened epoxy to fill the low spots until you have a smooth finish.

Fiberglassing is chemistry. Mix the parts per spec. Too much activator and the mix will get superhot and pot life will suffer. Mix a small batch exactly per instructions and practice on something - get used to pot life and how much time you have to work it. A larger batch in a deep tub will activate faster as well - its got to do with the chemical reaction.

Compliments of another forum. It's too late to type all that out.
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